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I regularly delete all zero byte and temp files on the windows partition using D7 and have never had a problem. However I've always understood that the best advice is "do not delete temp files that are less than 24 hours old" to be on the safe side.

Since I always have a system image backup I don't worry about it too much.

I also clean up system files using the sagerun/ sageset commands that give additional options but I guess you know that already! Just in case you don't here's the info:

Hard Drive Clean Up

Can't fully clean hard driveI have a 320 gb hard drive that used to be inside a laptop. I'm trying to fully format it and erase everything so I can put it into my desktop as an extra drive.
I can only free up 298.09 gb on the disk. There must still be some Windows 7 system files or something on there that wont go away.
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Hardware & Devices

Complete Clean of Hard driveThree members of my PC club are prepared to donate their old PC's to help older people get started in Computing. They all want me to guarantee that the hard drives will be completely cleaned so that no data can be recovered. They are all savvy enough to know that formatting is not enough! I'm sure...

General Discussion

Clean Install of Win7 - Wipe Hard Drive CleanHi Folks,
I just did a clean install of Win7 and must have done something wrong. I found a file called Windows.old.:confused:
I would like to wipe my hard drive completely clean and then install a fresh copy of Windows 7 Home Premium.
How do I accomplish this task? It's a good time to...

Installation & Setup

clean XP hard drive using win 7 clean commands?Hi, I want to clean/erase my xp hard drive. followed the tutorial on this forum and got to cmd - diskpart - select disk - clean all - exit but it weon't do anything. I put clean ), O clean, cean all O, etc and it just says Im not doing it right and so nothing happens. I can't find any similar...

Hardware & Devices

So you think your Hard drive is CLEANHi all
Whilst not W7 specific per se this is really important if you think you've found a Virus and are just using the "Infection Processes" supplied by your AV software.
Even a FORMAT of a hard disk doesn't erase or make old data inacessible.
Read this
BBC NEWS | Wales | Missile data...